MICROMASTER™ – SYSTEM SUPERVISOR
WITH POWER SUPPLY MONITOR, WATCHDOG
AND BATTERY BACKUP
TC70/71
ABSOLUTE MAXIMUM RATINGS*
Voltage (Any Pin) with Respect to
Ground ................................ GND – 0.3 to V
CC
+ 0.3V
Operating Temperature Range ............... – 40°C to +85°C
Storage Temperature Range ................ – 65°C to +150°C
Lead Temperature (Soldering, 10 sec) ................. +300°C
*This is a stress rating only and functional operation of the device at these
or any other conditions above those indicated in the operational sections of
the specifications is not implied. Exposure to Absolute Maximum Rating
Conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS:
Recommended DC Operations
: T
A
= T
MIN
to T
MAX,
unless otherwise specified.
Symbol
V
CC
V
IH
V
IH
V
IL
Parameter
Supply Voltage
Input HIGH Level
Input HIGH Level
Input LOW Level
Test Conditions
Note 1
CEI, WDD (Note 1)
RS (Note 1)
CEI, WDD, RS (Note 1)
Min
4.5
2.5
2.2
—
Typ
5.0
—
—
—
Max
5.5
—
—
0.8
Unit
V
V
V
V
ELECTRICAL CHARACTERISTICS:
DC
: T
A
= T
MIN
to T
MAX
, V
CC
= 4.5V to 5.5V, unless otherwise specified.
Symbol
I
CC1
I
CC2
I
IH
I
IL
I
IH
I
STBY
I
STBY
Parameter
Operating Current
Operating Current in
Battery Backup Mode
Input Leakage
Input Leakage
Input Leakage
Battery Standby Current
Battery Standby Current
Test Conditions
Notes 2, 3
V
CC
= 0; V
BATT
= 2.8V; (Note 3)
CEI
CEI
RS
5.5V > V
CC
> V
BATT
+ 0.2V
5.5V > V
CC
> V
BATT
+ 0.2V
T
A
= 25°C
Min
—
—
—
—
—
– 1.0
– 0.1
Typ
5
0.01
4
1
1
—
—
Max
6.5
0.20
7
—
—
0.02
0.02
Unit
mA
µA
µA
µA
µA
µA
µA
ELECTRICAL CHARACTERISTICS:
DC
: Power Supply Monitor, EXT. RESET and Watchdog:
T
A
= T
MIN
to T
MAX
, V
CC
= 4.5V to 5.5V, unless otherwise specified.
Symbol
I
OL
I
OH
WDD
I
V
STH
V
STL
V
CCTRIP
Parameter
Output Current 0.4V
(RS, TDO, CEO, PF Pins)
Output Current 2.4V
(TDO, CEO, PF Pins)
WDD Input Current
RS Strobe (HIGH) Level
RS Strobe (LOW) Level
V
CC
Trip Point
Test Conditions
V
OL
= 0.4V
V
OH
= 2.4V
WDD = GND
WDD = V
CC
Figure 3 (Note 1)
Figure 3 (Note 1)
(Note 1) 0°C
≤
T
A
≤
70°C
– 40°C
≤
T
A
≤
85°C
Min
2
2
– 120
—
V
DD
– 0.5
2.2
4.25
4.20
Typ
5
3
—
—
—
—
—
Max
—
—
—
25
—
V
DD
– 1.8
4.49
4.49
Unit
mA
mA
µA
V
V
ELECTRICAL CHARACTERISTICS:
DC
: Battery Backup and Threshold Detector:
T
A
= T
MIN
to T
MAX
, V
CC
= 4.5V to 5.5V, unless otherwise specified.
Symbol
V
OUT1
V
OUT2
5-8
Parameter
V
CCO
Output Voltage
V
OUT
in Battery Backup Mode
Test Conditions
Min
Typ
Max
—
—
—
Unit
V
V
I
OUT
= 1mA
V
CC
– 0.3 V
CC
– 0.1
I
OUT
= 50mA
V
CC
– 0.5 V
CC
– 0.20
I
OUT
= 250µA, V
CC
< V
BATT
– 0.2, V
BATT
= 2.8V V
BATT
– 0.1 V
BATT
– 0.02
TELCOM SEMICONDUCTOR, INC.
TELCOM [ TELCOM SEMICONDUCTOR, INC ]
